Ventilator



y 1944- J. A. CONBOIE 52,

VENTILATOR Filed June 10, 1942 11v: "ENITOR, JOSEPH/1. COMBO/E.

A T TORNE V.

Patented July 4, 1944 UNITED: STATES PATENT OFFICE a "2,352,821 o yENTILATo V JosephA. canton, San Francisco, can-r: Application June-10, 1942. Serial No. 446,413

3 Claims. (01. 9 8 -39) My invention relates to ventilators and more particularly to that type of ventilator adapted to be installed in window apertures or the like for the purpose of supplying a continuous volume of fresh air without the usual resulting drafts and compression areas.

Many other ventilators act upon air already admitted to a room sought to be air-conditioned but I have found that air pressure, volume, and velocity must be controlled before the air enters the room and that the air should then be allowed to enter, float in circulation, and pass out freely. By float I mean that the air drifts and filters into the room and does not rush thereinto creating unpredictable currents, eddies, drafts and pressure spots.

An object of my invention is to provide a ventilator which, through regulation of circulation, prevents air from rushing into a room and creating undesired currents and pressure, the

usual faults; to maintain a continuous steady flow of air in and out of a room, regardless of how hard the wind blows or from what direction; and to regulate the influx of air as to volume and velocity before the air enters the room. Further objects are to provide a ventilator adapted to eliminate cold-spots, running air currents, drafts and pressure areas. My ventilator may be placed in a window aperture or it may be built in the entire wall of a sleeping porch or room and the resultant ffloa-ting air will effectively prevent or alleviate respiratory and rheumatic ailments.

My invention is shown in the accompanying drawing by way of illustration wherein similar characters of reference indicate corresponding parts in the several views. a

Fig. l is a vertical side elevationalview taken on line l-l of Fig. 2. I

Fig. 2 is a front elevational View of my ventilator partially broken away.

My ventilator may be built into a wall I as in a window aperture and is the approximate depth of a conventional bottom window sill 2. The outside of the window aperture is provided with a suitable shutter 3 equipped with adjustable shutter sections adapted to be tilted to let in a desired amount of air, and a plurality of vertical vanes 4 may be superimposed on the outside surface of the said shutter sections in order to intercept horizontal air currents and deflec and direct them into the airy compartment 5. On the inner or room side, of the window aperture I provide a conventional sliding window 6,

travelling in channels 8 or, of course, .a- -case-i mentor double hung window may be utilized. A Venetian type blind 9 is hung on the .roomside of the window 6. The Venetian type. blind 8 has adjustable slats which may be tilted to any desired angle in the --conventional manner in order to regulate entrance or obstruct passage of air into the room from the air compartment 5.. I I

I provide a compartment -l-0 above the window'fi containing a housing ll shown -as .=a hori zontally positioned truncated cone open at -its end of largest diameter to the room and which be covered with any suitable grill l2. The apexofthe cone communicates 'with a conduit l3. The conduit I3 extends up the outside surface of the wall I to a point 44 a short distance above the top of my compartment in. Adamper I6 is mountedin the conduit to regulate the flow of air therethrough. The vertically disposed portion of my conduit is enclosed within a relatively large chimney 15, said chimney communicating with the air compartment 5 andexten'dingnpwardly'to any desired escape-a suit! able dis'tance above the open end ll of the conduit l3.

The housing member H encloses a fan 20 driven by an electric motor 2| connected by wires 22 to any suitable source of power supply. The fan 20 is adapted to withdraw air from the room through the grill l2 and force the said air toward the apex of the conical housing me'm= ber H and into the conduit 13 for expulsion therefrom at open end 14 within the chimney I5.

The compartment I0 is provided with a bottom l9 which is'angled in such manner to act as an air guide to shunt upwardly travelling air into chimney 15 from air compartment 5.

' Recirculation pipes 2 4 arecormected to conduit 1-3 at 2 5. Recirculation pipes 24 are projected from conduit 43 at '26 to points adjacent the top corner portions of window 6 at opposite sides of the air compartment 5 and depend vertically therefrom to any desired point and are capped at 21. Shut-off valves 25 are provided to regulate air flow through pipes 24. The pipes 26 are perforated throughout their vertical length as at 28.

In operation, the fan 22 withdraws air from the room through the grill l2 and forces the air into conduit l3 where it is expelled under pressure at 14 within chimney IS. The venting of air under pressure at M causes a current in chimney l5 and communicating air compartment so that air currents admitted into the air compartment 5 through adjustable shutter 3 are directed upwardly into chimney l5. Air currents not thus directed upwardly come into contact with ,blind 9, it being understood that window 6 is in open position during normal operation of my ventilator.

It is understood that proper adjustment of shutter 3 and blind 9 is somewhat dependent upon weather conditions existent at any particular time, e. 'g.,,if a hard wind is blowing the shutter sections of shutter 3 will not be opened to such an extent as would be the case if mild weather prevailed, and the same would be true of blind 9. If the weather were particularly inclement, it might be found judicious. to close the window 6 partially, hence further obstructing air currents.

As has been pointed out, the purpose of my particular construction is to slow down, break up, or eliminate natural air currents prior to filtration through blind 9 into the room sought to be ventilated. The air compartment 5 is the place wherein the currents of air entering from the outside are stilled by means of the active current up chimney l5, and blind 9, after having been initially acted upon by my vanes 4 and shutter 3. At the same time my fan 20 withdraws used air from the room and hence circulation is insured. It is obvious that suitable means may be employed to withdraw used air from any part of the room as by appropriate pipe connections.

If it is desired to recirculate previously warmed or cooled air in the room, valves 25 in pipes 24 are opened and the fan 20' forces the suitably warmed or cooled air into pipes 24 for expulsion through perforations 28. The air thusexpelled from pipes 24 is free to mix with fresh'air entering the air compartment and is free 'to pass through the blind member 8 and float in circulation in the room. The air thus circulated by pipes 24 can be cooled or warmed as desired in any appropriate manner, e. g. by a proper refrigeration and/or heating unit indicated generally at 3!! installed in housing member l l positioned to act upon the air withdrawn from the room by fan 20 and before recirculation.

I'have found that if there is sufficient air current outside, the action by the winds on my chimney escape; not shown, cause an upwardly rising draft in chimney l5 and conduit l3, hence rendering unnecessary under such circumstances, the use of my fan 20 to create those currents. Y

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention asdefined by the appended claims.

Having thus described my invention, what I claim as new and useful and desire to secure by Letters Patent is:

1. A ventilating system comprising in combination with a wall having an aperture, an ad-- justable shutter with a plurality of vanes afilxed thereto positioned on the weather side of the said aperture, a Venetian blind positioned on the room side of said aperture and forming an air compartment between the said shutter and blind, a chimney communicating with the top of the said air compartment and leading to an escape means comprising a power fan disposed at the top of the air compartment for producing an upward current of air within said chimney, and recirculation conduits communicating with the said fan at the discharge side thereof and projected into said air compartment for the purpose of discharging air forced into said conduits by said fan.

2. In a ventilating system comprising in combination with a wall having anaperture, an adjustable shutter with a plurality of vanes affixed thereto positioned on the weather side of the said aperture, a Venetian blind on the room side of said aperture forming an air compartment between said shutter and said blind, a chimney communicating with said air compartment and leading to an escape, means positioned above the air compartment for producing an upward air current in said chimney comprising a power fan adapted to withdraw air from the room sought to be ventilated and to expel said air under pressure into said chimney and recirculation means comprising a pair of perforated pipes positioned within said air compartment adapted to recirculate air withdrawn from the room sought to be ventilated by means "of the said fan.

3. A ventilating system comprising in combination with a wall having an aperture of baflle means consisting of an adjustable shutter and a plurality of vanes affixed thereto positioned on the weather side of the said aperture, an adjustable window on the room side of the said aperture, a Venetian blind on the room side of said window, a chimney leading to an escape and on1- municating with the air compartment formed between the said shutter and the said window and Venetian blind, means comprising a power fan to produce an upwardly rising draft in said chimney whereby air currents entering through said shutter are directed upwardly into said chimney, and a perforated recirculation pipe positioned in said air compartment and communicating with the discharge side of said fan for recirculating air discharged into said pipe by said fan.

JOSEPH A. CONBOIE. 

